Oiling system.



L. SGHWITZER. OILING SYSTEM. APPLICATION FILED JUNE 3, 1912.

1, 1 1 7,256. Patented Nov. 17, 1914.

3 SHEETS-SHEET 1.

51400141306 QR i t w was G Hoa 11mg L. SCHWITZER. OILING SYSTEM.

APPLICATION FILED JUNE 3, 1912. 1 1 1? 25@ Patented NOV.17,1914.

3 SHEBTSSHEET 2.

L. SGHWITZER.

01mm SYSTEM.

APPLIOATIQN IILIID JUNE 3, 1912.

Patented Nov. 17, 1914.

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mm SYSTEM.

Specification of Letters Patent.

Patented Nov. 1?, 2914.

Application filed June 3, 1912. Serial No. 701,230.

To all whom it may concern Be it known that I, LOUIS Sonwrrznn, a

citizen of Austria-Hungary, (who has de-' System, of which the following is a specification.

Theobject of my invention is to :provide 7 means by which the various portions of the crankshaft, the valve shaft, the pitman and pistons, and the valve sleeve pitmen may be thoroughly lubricated.

The accompanying drawings illustrate my invention.

Figure 1 is a side elevation of a fourcylinder internal combustion engine of the body of the engine 'havin sleeve valve, type, with portions shown in vertical section, embodying my invention;

Fig.'2 is a fragmentary seetion,on a larger scale, transverse to the crank shaft and valve shaft; Fig. 3 is a plan of the exterior of the upper member of the crank shaft bearing,

Fig- 4 is a .plan' of the interior of the lower member of the crank shaft bearing; Fig. 5 is a lan of the exterior of the valve shaft bushing; Fig. 6 is a plan of the interior of the upper member of the bearing bushing which is journaled upon'one of the wristpins-o'fithe crank shaft; Fig. '7 -is an-e'lev-a tion of the crank shaft; Fig. 8 'is an 'jelevation'ofthe valve shaft, and Fig. 9Iisa view similar to Fig. 2 showing an alternative form.-

In the drawings, 10 indicates the main a plurality of cylinders within each of w ich is mounted a pair of nested sleeve valves 11' and 12 with a piston 18. arranged within the inner valve sleeve 11. Each piston is=provided with a h llow "pin 14 through the'ends of which oil may be delivered to'the'interior of'th'e sleeve valve 12. Pivoted 'u cneach pin 14 is a pitman'15 which-is provided with alon I gitudinaloil passage 16. Thelower endoif the pitman 15 is journ'riied upon a'wrist pin 17 of the crank shaft 18, the bearing being formed by a pair of-bushing 19, the upper one of which is provided with a radial opening 21 communicating with the I lower end of passage 16'a'nd, in the. inner surface of the bushing, communicating with a short longitudinal'passagem which, fin

turn, communicates with a short circumfermembers 19,

travel of the wrist pin-end of an oil-passage 24 which is formed by a single drillmg, as indicated in dotted'lines in Fig. 1, passing diagonally through the wrist pin 17 and into andthrough an intermediate journal 25 of the crank shaft, said passage 24 emerging from the said journal 25 at one point in its circumference. The journal 25 is supported in bearing bushings 26 and 27, the upper bushing 27 being provided with a pair of radial circumferentially alined passages 28,28 either one of which may be caused't-o-register with the lower end of an oil delivery passage 29. Onl one of the passages 28 needs to beprovi ed so far as the operation *is'concerned, but I prefer to form the bushing asdescribed in order that it ma be placed -in*either possible position and t us be fool-proof. The inner ends ofthe two'passages 28 are-connected by a short circumferential ing 26 is provided' with-two pairs'of radial passages 31, 32 which are connected together in pairs by short longitudinal grooves 33 formed in the outer surface of the bushing grooves 34, 3.,each of which connects one' .ofthe'passages 28 with the nearestpassagev The'passages'31 and 32 lie upon opp site 'sides'of the planeof'the passages 28'- and are so arranged as to be in the .path of travel of the journal ends of the oil as sages 24, said oil passagescoming ternately and'intermi-ttently into registry with their respective passages 31, 31"and32, 32', and this registry taking place asythe'wrist pm approaches its upper. position.

oove formedin the inner face of thebushmg. The-lower bush The sleevevalvell'is vertical? reci rocated by means of a pitman 41 whic is pivoted at its upper end to a pin 42 lubricated by means 0 011 delivered thereto through a passage 48 ektendin'g'throu'gh the pitm'an and' com municating at its lower end'with the interior of bushing 44 whichjis-similar'in construction to the bushing 27. The bushing 44 is lournalcd'upon the crank-"pin 45 of the valve shaft 46. Si'mflarlyeach valve sleeve 12 is. 'recipr'ocatad by means of a pi-tman 47,

each crank pin 45 or 48 of the valve shaft is a journal 51 and extending from some point in the circumference of each said journal diagonally into and through the adjacent crank pin is an oil passage-52 each of said passages being formed by a single drilling as clearly shown in Fig. 9.

Each of the journals 51 is supported in a bushing 55 which is provided with an external circumferential groove 56 which registers with the upper end of the passage 29. Each of the bushings 55 is also provided with two radial holes 57, 57 which lie upon opposite sides of groove 56 and connected therewith by a shallow groove 58 in the outer surface of the bushing. The inner end of each hole 57 is circumferentially extended in a shallow groove 58, the arrangement being such that each of these grooves 58 may intermittently register with the journal end of one of the passages 52. Each bushin 55 is supported in a bushing pocket 70 whic is in communication with Oll reservoir 71, said reservoir, being provided with a multiplicity of outlets 72 each of which re 'sters with groove 56 of a bushing 55. n Fig. 9 ll show an alternative arrangement in which the passage 29 may be supplied by intermittent impulses of oil through a passage 91 which extends through the journal 51 and intermittently registers between passages 7 2 and 29. In either of these arrangements there is a successive registry between the reservoir and the several oil delivery passages so that. pressure of the oil supply within the reservoir may be readily maintained.

The operation is as follows: Oil from chamber 71 will pass in suflicient quantities through passage 58 to each journal 51 of the valve shaft to properly lubricate the same. Other oil will pass through the passage 56 around the exterior of the bushing to passage 29. The oil passing inwardly through passages 58 is intermittently delivered to the journal end of the corresponding passage 52 so that a quantity of Oll will be positively projected through passage 52 to the circumference of the adjacent crank shaft pin 45 or 48. This registration will take place at the time the crank pin is moving toward its upper position, so that the oil reaching this point will pass into the interior longitudinal oil passage of the pitman 41 or 47 not only under the-force of projection due to the pressure of the oil, but also under the force of projection due to the centrifugal force acting upon the oil, such centrifu al force at that articular time acting in t e proper direction to assist in the propulsion of the oil through the pitman passage upwardly toward the pin 42. A portion of the oil will passthrou h a registered passage 28 into the interior of the;

bushings 27-26 for the purpose of l'ubri eating the journal 25 while the remainder of the oil will pass downwardly through the adjacent passage 34 and then longitudinally through the passage 33 and upwardly and inwardly through the passages 31 and 32 and the connected grooves 31, 32, respectively, so that when the journal ends of the oil passages 24 intermittently register therewith, the oil will be projected through said passages 24. The registration of the pas sages 24 with their respective supply passages will take place as the corresponding crank pins are approaching their uppermost osition so that (in the manner already descri ed in connection with the valve shaft) the projection of oil through each passage 24 will take place at a time when said passage will impart to the oil centrifugal force which will assist the force of propulsion in delivering the oil into and through the passage 16 of the corresponding pitman 15 so as to thus insure the del very of oil into the connecting pin assage 14 and from thence to the surface 0 the piston 13. 7

By the above described arrangement I have been able to thoroughly lubricate the several parts of the engine, without the use of piping or soldered joints.

The intermittent registration between the oil passage in the pitman and the dia onally arranged oil passage produces a syp on or suction action upon the oil supply.

I claim as my invention:

1. In an internal combustion engine, the combination of a crank shaft having a multiplicity of journals and eccentric portions, a valve shaftsubstantially parallel with said crank shaft and provided with amultiplicity of journals and eccentric portions, an oil passage formed through the body of each of said shafts and having its ends merging respectively in the circumference of the ]Ol1I'- ml and the circumference of the eccentric portion, and oil passages forming communications between the journal portions of the two shafts so as to form a single closed oiling system, and means for forcing oil to said oilingI system.

2. 11 an internal combustion engine, the combination of a crank shaft having a multiplicity of journals and eccentric portions, a valve shaft substantially parallel with said crank shaft and provided with a multiplicity of journals and eccentric portions, an oil passage formed through the body of each of said shafts and having its ends merging respectively in the circumference of the journal and the circumference of the eccentric portion, and oil passages forming communications between the journal portions of the two shafts and registering with the oil passages through the respective shafts so as to form a single closed oiling system, and means for forcing oil to said oi ing system.

3. In an internal combustion engine, the

combination of a crank shaft having amultiplicity of journals and eccentric portions, a valve shaft substantially parallel with said crank shaft and provided with a multiplicity of journals and eccentric portions, an oil passage formed through the body of each of said shafts and having its ends merging respectively in the circumference of the journal and the circumference of the eccentric portion, oil passages forming communications between the journal portions of the two shafts, and an oil reservoir having discharge passages leading to the journal of one of said shafts so as to form a single closed oiling system, and means for forcing oil to said oiling system.

4. In an internal combustion engine, the combination of anrank shaft having a multiplicity of bearings and crank pins, a pitman connected with each of said crank pins,

a valve shaft extending substantially paraljlel with the crank shaft and provided with a multiplicity of bearings and eccentric portions, an oil reservoir extending substantially parallel with the two shafts and having a multiplicity of discharge passages leading to the bearings of one of said shafts,

oil receiving passages.

In witness whereof, I, have hereunto set my hand and seal at Indianapolis, Indiana, this 31st day of May, A. D. one thousand nine hundred and twelve.

LOUIS SOHWITZER. [1 s.]

Witnesses:

ARTHUR M. H001), MAY LAYDEN. 

